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Finding the Fourth Proportional to 419,878.89, 579,374.44 and 247,804.04

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Solution

The fourth proportional to 419,878.89, 579,374.44 and 247,804.04 is: 341,935.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,878.89 : 579,374.44 = 247,804.04 : x
  2. Step 2: Convert to fraction form
    419,878.89/579,374.44 = 247,804.04/x
  3. Step 3: Cross multiply
    419,878.89x = 579,374.44 × 247,804.04
  4. Step 4: Simplify right side
    419,878.89x = 143,571,327,733.66
  5. Step 5: Solve for x
    x = 143,571,327,733.66/419,878.89
  6. Step 6: Final answer
    x = 341,935.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.